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The numbering in brackets below the main one is taken from the Catalog of Bulgarian Postal Entities, Part I, Postcards (1879-2007) by Bulphila Publishing House and the Michel Catalog. |
| 1912 year. | Detailed full catalog for 1913 year. | 1914 year. |
| BC number(s): k19131 (PC 38), " Postcard as k19011 (PC 18) " |
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| BC number(s): k19132 (PC 39 a), " Postal card (Thick paper) " |
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| BC number(s): k19133 (PC 39 b), Postcard (Thick Paper) (1914) |
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| BC number(s): k19134 (PC 39 c), Postcard (Thick Paper) (1915) |
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| BC number(s): k19135 (PC 40), " Postal card (Thick paper) " |
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| BC number(s): k19136 (PC 41), k19136 карта, k19136 отговор, "Postcard with answer" |
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| BC number(s): k19137 (PC 42), k19137 карта, k19137 отговор, "Postcard with answer" |
| 1912 year. | Detailed full catalog for 1913 year. | 1914 year. |
